<template>
<div class="app-container">
    <h2 style="text-align: center">发布新课程</h2>

    <el-steps 
    :active="3" 
    process-status="wait" 
    align-center 
    style="margin-bottom: 40px;">
        <el-step title="填写课程基本信息" />
        <el-step title="创建课程大纲" />
        <el-step title="发布课程" />
    </el-steps>

    <div class="ccInfo">
        <img :src="coursePublish.cover" >
        <div class="main">
            <h2>{{coursePublish.title}}</h2>
            <p class="gray">
                <span>共{{coursePublish.lessonNum}}课时</span>
            </p>
            <p>
                <span>所属分类{{coursePublish.subjectLevelOne}} - {{coursePublish.subjectLevelTwo}}</span>
            </p>
            <p>
                <span>课程讲师:{{coursePublish.teacherName}}</span>
            </p>
            <h3 class="red">￥{{coursePublish.price}}</h3>
        </div>
    </div>

    <div>
        <el-button type="warning" @click="previous">上一步</el-button>
        <el-button type="success" :disabled="saveBtnDisabled" @click="publish">发布课程</el-button>
    </div>
</div>
</template>

<script>
import course from '@/api/teacher/course'
export default {
    data() {
        return {
            saveBtnDisabled:false,
            courseId:'',
            coursePublish:{}
        };
    },
    created() {
        // 获取路由课程id值
        if(this.$route.params && this.$route.params.id){
            this.courseId = this.$route.params.id
            // 调用接口方法根据课程id查询
            this.getPublishCourseInfoById()
        }
        
    },
    methods: {
        getPublishCourseInfoById(){
            course.getPublishCourseInfo(this.courseId)
            .then(res => {
                this.coursePublish = res.data.publishInfo
            })
        },
        previous(){
            this.$router.push({path: '/course/chapter/'+this.courseId})
        },
        publish() {
            course.publishCourse(this.courseId)
            .then( res => {
                this.$message({
                    type:'success',
                    message:'课程发布成功!'
                })
                // 跳转课程列表页面
                this.$router.push({path: '/course/publish/'+this.courseId})
            })
        }
    }
}
</script>
<style scoped>
.ccInfo {
    background: #f5f5f5;
    padding: 20px;
    overflow: hidden;
    border: 1px dashed #DDD;
    margin-bottom: 40px;
    position: relative;
}
.ccInfo img {
    background: #d6d6d6;
    width: 500px;
    height: 278px;
    display: block;
    float: left;
    border: none;
}
.ccInfo .main {
    margin-left: 520px;
}

.ccInfo .main h2 {
    font-size: 28px;
    margin-bottom: 30px;
    line-height: 1;
    font-weight: normal;
}
.ccInfo .main p {
    margin-bottom: 10px;
    word-wrap: break-word;
    line-height: 24px;
    max-height: 48px;
    overflow: hidden;
}

.ccInfo .main p {
    margin-bottom: 10px;
    word-wrap: break-word;
    line-height: 24px;
    max-height: 48px;
    overflow: hidden;
}
.ccInfo .main h3 {
    left: 540px;
    bottom: 20px;
    line-height: 1;
    font-size: 28px;
    color: #d32f24;
    font-weight: normal;
    position: absolute;
}
</style>